Cannabis Driving Laws: What You Need to Know

Cannabis Driving Laws: What You Need to Know

Since attitudes have changed regarding cannabis in virtually every part of the US, it is still important that you understand driving laws. There are certain rules you need to be aware of, and these vary somewhat from state-to-state.

 

The fact that we can legally buy marijuana in a lot of the US means that it is not criminal to consume it, but just like alcohol, there are always going to be rules and restrictions about controlling a vehicle.

 

How DUI Laws Apply to Marijuana

 


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Marijuana is still a substance that is controlled under DUIs, and can lead to convictions if you’re found to be driving under the influence. There are different ways in which these laws are relevant from one state to the next.

 

    1. Impairment DUI – This means that the prosecutor needs to prove that the driver was impaired, and in some states it needs proof that they were significantly affected.
    2. Per Se Marijuana DUI – A Per Se DUI is to do with the amount of marijuana found in the person’s system. There are often limits on the amount of marijuana, similar to how the law works in most of the world regarding alcohol.
    3. Zero Tolerance DUI – These are the states with zero tolerance meaning you cannot consume any marijuana and can be charged with a DUI if it is found in your system.
    4. Permissible Inference Law – This is where the prosecutor has to prove you were impaired in your driving, but also a certain level of cannabis or THC in your system is seen as permissible inference.

Marijuana DUI Laws by State

 

The DUI laws vary from one state to the next, so you need to be aware of the laws in the state you are driving in.

 

  • 17 states have zero tolerance or per se laws for marijuana, including Utah and Rhode Island.
  • 13 states have zero tolerance for THC including Wisconsin and Michigan.
  • 4 states have specific per se limits for THC including Montana and Nevada.
  • 1 state has a permissible inference law for THC, this is Colorado.

 

Driving Laws in States With Legalized Cannabis

 

Even states with legalized cannabis have to have restrictions. The rules are just as important, and someone can not be in charge of a motor vehicle while they are under the influence. Punishments change depending on which state you are in, but states like Nevada with legalized weed still have restrictions. They use officers trained in drug evaluation and give officers the power to decide if a driver is impaired based on the substances they have consumed. Similar arrangements are in place in Colorado.

 

Some states have a different approach. In California there is actually no standard blood test but it is still illegal to drive a vehicle if you are under the influence of any drug.

 

The Penalties for DUI of Marijuana

  1. Misdemeanor Punishment – This is often given if it is your first offence. The punishments vary from one state to another but you can still face hefty fines and 3-5 years in jail.
  2. Felony Punishment for DUI of Marijuana – If it is not the first offence then a felony punishment might be applied. This can carry a far longer sentence and a heftier fine. Felony punishments can also be applied in some scenarios such as a death stemming from the accident.

 

Legal defenses to DUI of Marijuana

 

The driver has not used marijuana. If it can be proved that the test was not carried out properly and the driver did not take cannabis then this could be a defense.

 

The driver recently used marijuana, but is no longer high. This is a defense if it can be proven that the cannabis is no longer affecting that person,

 

The driver used marijuana but his/her driving was not impaired. In some states, an impairment to the driving needs to be proven regardless of whether cannabis was consumed.

 

Legal marijuana use is not a defense to DUI marijuana. Keep in mind that legal marijuana use doesn’t include driving, even if it is medical. You can’t drive a vehicle under the influence.

 

No defense that impairment was based partly on other causes. If your driving was impaired in any other way such as illness it still means you should not be driving, especially with marijuana in the system.

 

How can the State Prove a DUI of Marijuana Charge?

 

Chemical tests are the main way that the state can prove the DUI of marijuana charge. Some states also give their legal enforcers the option to evaluate the driver and whether or not they are impaired due to marijuana. Their report could be vital. Not all states have standardized tests.

 

How to Drive Lawfully as a Medical Marijuana Patient

 

It’s important to check the laws in your state. If there is not a chemical test then it is your responsibility to make sure you are not going to be impaired by the marijuana. If your state has per se laws that give you an indication of whether you are over a legal limit, be sure to check that you are under that limit when driving. It may also help to use a high CBD strain rather than high THC.

 

What Constitutes “Driving”: Actual Physical Control

 

It needs to be proven that you had physical control of the vehicle. The “actual physical control” law means that if something happened such as if the car had crashed or they had passed out and not actually driving when arrested, you may not be deemed under actual physical control.

 

Difference between Driving Laws in Canada and the US

 

In Canada, the laws are similar. Operating a vehicle after taking cannabis is a criminal offence, and there is something of a ‘sliding scale’ based on how much is in your system. Between 2 and 5 nanograms of THC per ml of blood can result in a hefty fine, whereas more than 5 nanograms can be both a larger fine and the potential of jail time.

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